Thread-breaking device for spinning machines



May 15, 1923. 1,455,529

- F. Q. HARTMAN THREAD BREAKING DEVICE FOR SPINNING'MACHINES Filed April 14 1920 Patented May 192.3.

FERDINAND o. nan-Titan, or DANVILLEQPENLTsYLVANIA.

THREAD-Bananas nnvron run srirnvrne MACHINES.

, Application filed April 14, 1920. Serial 1%. 373,750.

chines, of which the vfollowing is a speci fication.

dependently spinning a plurality of threads 15 and winding the threads sospun on a single spool, from which latter the threads are subsequently to be twisted into one strand on a twisting machine. It is quite essential in an operation of this kind,th at a single thread, ora less number than the whole number of threads being wound, be not allowed to run onto the spool, as thiswould produce a serious defect when theithreads so spun-were finally twisted into a strand. resent invention is directed to a thread breaking device which may be interposed between the spindles and the takeup spool on'which the spun threads are wound, and which shall be under the control of each of'the threadguide leversto perform its function of breaking a companion thread when another thread is unintentionally broken, so that the several threads may be united before anyone or more of the threads has or have been allowed to be wound upon the take-up spool without its or: their companion thread or threads.

The-object of the invention is to provide a device of this character which is 40 relatively cheap and simple in construction while positive in action.

Another object "consists in providing such a device which has means for automatically locking the threadbrealring mechanism in inoperative position. v

Another object consists in providing certain means, form, construction and arrangement ofthe several parts whereby the above named and other objectsmay be efie'ctively attained. I p

A practical embodiment of my invention is represented in the accompanying drawin s, in which 1 ig. 1 represents a front elevation of one This invention relates to a thread break tion of myfinvention. p s I 1 F'g. 2 represents a vertical sectiontaken in .the plane of the "line lI- -II of Fig; 1,

looking in the directionoflthe arrows.

" Fig. 3 represents a jde'tail sec-tion of the parts being shown in d full lines and dotted lines and Fig. 4 represents a similar'v ewof-the V p a parts shown in anotherposition'.

The mainframe of the machine ononeend i. I i Z is denoted ,by 1, the talregup I spool' by. 2,'lthetraverse guide for. removing the threads and laying them on the take-up spool, loyB', the

' of the devices in operative position, so much i of the spinning machine being shown as; will sufiice .todisclosea. practical appl1ca a v "parts of the thread breaking device proper,

fierent positions in x wheel for driving the take-up spool 4 i a P o pi d to flsp n i g two in-..-.

dependent threads, 5 and "6 the'tbobbins carrying the threads on the spindles 5[jand ing "mechanisms in proper position on the spinning machine so that there shall beone for each group ofthreads to be combined on a single take-up spool,.I secured a horizontal,'.

rail 11, to the end framel .otthe spinning machine. :This rail maybe composed of wood-so as to receive a screw 12. for attach-j,"

ing the brackets. containingf the thread in. position. Each bracket consists of a face plate 13 which has brea-l'zing mechanism two forwardly projecting arms 14,15, each Y of whicharms has in addition a laterally 17, and oppositely disprojecting wing 16, posed stops 16*, 17*.

A pair of bread pivoted in the lower part of the'arms 14, 15

by a 20, and li ited in their outward movement y t stops 16%, 17*, .j I

guide. levers v18, 19, are" The thread guid levers 18,19 are vided with feet*(oneof which is shownat wardly substantially at right angles to the 21', Figs. 2,3 and 4), which project rearmain body portion of the said levers-and the balance of the parts such that the weight I of the-Said. fe 2, ..cfi sesthe flevers t be under a normal tendency to swing. or drop rearwardly; Each of'the said guideleversv 18, 19has a. guide wire 22 fixed to its'inpper parts by means of a screw 23. H The upper,;,,. i

end of these guide wires are bent laterally in the form of a hairpin and arranged to receive the threads. I I

The thread breaking mechanism proper consists of an arm 2% which is pivoted on the pintle between the levers 18, 19 and which has a weight for overbalancing it so as to cause it to normally rest in substantially horizontal position and out of the .way of a the threads running from the bobbins 7 and 8 as clearly -shownin Fig.2. In this position thearin 24 impinges against the lower part of theiiace plate 13 of the bracket.

= engaged by the :toot 2l of the thread guide. levers 18, 19', when one of the latter falls or The said arm 2 1 has a pair of laterally extending-lugs 26 which. are adaptedv to be drops rearwardly, for thepurpose of overbalancing the arm'2 and swinging t against the resistance of its weight 25, into. approximation to the threadsrunningto the bobv,bins'Z ,8, as will hereinafter be described.

I The extremity of the arm24 opposite the I weight 25 is furnished with a threadbreakin'g. mechanism which consists of a crosshead provided with-a thread catching coil 28 N at each-endfthereof. This crosshead may be composed of wire. suitably bent. and coiled intofshape and it mayconvenientlybe se- 30 i i ear s29 formed thereon. The device also includes guide and tension elements which curedto the arm 24 by bending it around have. coiled body portions 30, 31* ,and upwardly extending hookEshaped stems 32, 33.

These- 'coinbined the. guideand tension ele I ments may appropriately be composed of wire coil and'bent into proper shape, and they are secured to the wings 16, 17, of the brackets by means of screws 34, 35. It is,

, intended that the. threadshall be passed through one or more of the coils of the body portions 30, 31 and then wound around the stems 32, .33, onejor more times in order to give the desired tension, as clearly shown in Figs. 1 and 2. I

Inorder to hold the thread guide levers 19 substantially motionless and out of engagement with the arm 24, during the spinningand windingot the thread, guide bars 36,37 are mounted in a bracket 38 carried by the rail -11. The location of these guide barsare such that when the thread guide levers 18, 19 are in thread guiding position with their guide wires 22 engaged by the threads 9,10, the said .-g11ide. wires will .l e between the two bars, while the thread passes in frontv of the'said bars. It will be apparent thatthis arrangement tends to hold {thelevers 18,- 19snuglyup againstthe bars 36, 3?,during the operation of the machine,

whilethefsaid bars alsoimpart a slight additional tensionto the thread, owingtothe balance of, the guide levers :18, 19,. and tends to cause them to fall rearwardly asalready described.

Means also provided for temporarily locking the thread guide levers and counterbalanced arm 24 in the position shown in Fig. 2, or the thread guide levers locked in one position and the arm 24 in its operat ve position as shown in Fig. l. This means in cludes a shaft 39 which is journaled in an ear 40 uprising from the bracket 38. detent 4:1 is fixed to the shaft by aset screw .42 and a handle 43' is formed by bending one end of the shaft 39. The detent is ,pro-

vided with oppositely disposed lugs 14, 45 which are arranged to engagecarn tacesafi of the thread guide levers 18, 19 tor'locking them in an inoperative position as shown in Fig. l. The counterbalanced arm is locked-by means of a finger 47 projecting upwardly from the detent al in position'to engage the weight 25 in eitherthe position shown inFig. & or the position shown in Fig. 2,. in which latter position the detent is shown in dottedoutline. Thus, it will be seen that the detent with its lugs and finger will lock both the thread guide levers and the arm24 in withdrawn or inoperative position. 7 When it is desired to lock the thread guide levers and the arm. in inoperative position, it is simply necessary to turn the handled-3, and hence the shaft 39 and the detent'carried thereby, into position so that the. finger t? engages the weight 25 and the lugs 44:, 45 engage the; cam faces of the thread guide levers 18, 19. When the parts are locked in either of the positions above described, the thread may be disengaged from either or both of the thread guidelevers.

In operation the thread which comes from i i the bobbins 7, 8 ispassed through the coils 30,31 and around the stems 32, 33 of the I combined guide and tension elements, thence through the guide wires 22 and thence .over the traverse guide 3 and under-the spool 2. Ii", during the.v operation of the machine,

one of the threads 9,. 10 accidentally breaks,

the guide lever with which it is engaged.

. will at once drop back. so that its foot conco-pending applications, Serial No. 237,609,

filed May 31st, 1918, Serial Nos.'373,7 4c8and 373,749, filed April 14th, 1920.

.It will be understood that various changes may be resorted to in the form, construction and arrangement of the several parts without departing fromthe spirit and scope of prising, a counterbalanced thread breaker, of oppositely disposed coils carried by said,

thread breakena-rranged to be swung by the breaker intothe path 'ofthe threads .to catch and break them.

3; The combination With a thread breaking mechanism for spinning machines comprising, a counterbalanced thread breaker provided With an arm and laterally extending ears, of a cross head bent to engage said ears and having coils arranged to be swung bythe breaker into the path of the threads to catch and break them. 7

In testimony, that I claim the foregoing as my invention, I have signed my name this 22ndday of hlarch, 1920.

FERDINAND o. HARTMAN. 

